package com.kailong.controller;

import com.kailong.pojo.Result;
import com.kailong.pojo.User;
import com.kailong.service.UserService;
import com.kailong.utils.JwtUtil;
import com.kailong.utils.Md5Util;
import com.kailong.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private  UserService userService;
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        //查询用户
        User user = userService.findByUserName(username);

            if(user == null) {
                //注册
                userService.register(username,password);
                return Result.success();
            }else{
                //占用
                return Result.error("用户名已被占用");
            }
        }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        //根据用户名查询用户
        User user = userService.findByUserName(username);
        //判断用户是否存在
        if(user == null) {
            return Result.error("用户名错误");
        }
        //判断密码是否正确，user中的密码是密文形式
        if(Md5Util.getMD5String(password).equals(user.getPassword())) {
            //登录成功
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",user.getId());
            claims.put("username",user.getUsername());
            String token = JwtUtil.genToken(claims);
            //把token存储到redis中
            ValueOperations<String,String> ops = stringRedisTemplate.opsForValue();
            ops.set(token,token,1, TimeUnit.HOURS);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(/*@RequestHeader(name = "Authorization") String token*/){
       /* //根据用户名查询用户
        Map<String,Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");*/
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user =  userService.findByUserName(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }
    @PatchMapping("/updateAvatar")
    //@URL校验avatarUrl为合法url地址
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }
    @PatchMapping("/updatePwd")
    public Result updatePwd(@RequestBody Map<String , String> params,@RequestHeader("Authorization") String token){
        //1.校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        //原密码是否正确
        //嗲用userservice根据用户名拿到密码，再和oldPwd比对
        Map<String,Object> map = ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user = userService.findByUserName(username);
        if(!user.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }
        //newPwd和rePwd是否一样
        if(!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }
        //更新密码
        userService.updatePwd(newPwd);
        //删除redis中对应的token
        ValueOperations<String, String> ops = stringRedisTemplate.opsForValue();
        ops.getOperations().delete(token);
        return Result.success();
    }
}
